Square column



Aug. 21, 1962 A. E. SHLAGER SQUARE COLUMN Filed April 14, 1958 INVENTOR.

United States Patent 3,050,161 SQUARE COLUMN Abraham E. Shlager, 15Thacher St, Brookline, Mass. Filed Apr. 14, 1958, Ser. No. 728,375

4 Claims. (Cl. 189-38) wherever possible has sought to reduce thecross-sectionof load carrying members in order to limit the loss ofspace and carry more load to enlarge clear span distance and area freecolumn space in factories and high buildings. Any structural member thatcould occupy a smaller cross-sectional area than conventional columnsand carry more load would meet with wide acceptance.

The primary object of my invention is to provide a load carrying columnhaving a smaller cross-sectional area than other members now availablefor supporting a given load.

Another important object of my invention is to provide a square columnhaving a greater load carrying capacity than other square columns nowavailable having the same cross-section.

-Still another important object of my invention is to provide a squarecolumn which enables eccentric loads to be at least partially supportedat the center of the column.

To accomplish these and other objects,'the several embodiments of myinvention include H-beams which form the column core. Side plates arewelded to the edges of the H-beam flanges to present a squarecross-section. This section is substantially equal in carrying capacityin both directions of the axis whereas without the side plates thecolumn can carry substantially less on the axis aligned with the webthan on the other axis normal to it. Concrete fills the chambers on eachside of the web which adds to the carrying capacity of the columns. In asecond embodiment of my invention, the concrete is omitted andadditional plates are welded on one side to the centers of the sideplates and on the other side tothe center of the web of the H-beam.These additional plates provide means for transferring eccentric loadsto the center of the column. 7

These and other objects and featurm of my invention along with itsincident advantages will be better understood and appreciated from thefollowing detailed description of several embodiments thereof, selectedfor purposes of illustration and shownin the accompanying drawings, inwhich:

FIGURE 1 is a cross-sectional view of a square column constructed inaccordance with my invention;

FIGURE 2 is a view similar to FIGURE 1 and illustrating the manner inwhich eccentric loads may be applied to the column;

FIGURE 3 is an elevation view of the column shown in FIGURE 2;

FIGURE 4 is a cross-sectional view of another square column constructedin accordance with my invention;

FIGURE 5 is a cross-sectional view similar to FIGURE 4 but showing themanner in which an eccentric load may be secured to the column; j

FIGURE '6 is an elevation view of the embodiment of my invention shownin FIGURE 5; and

FIGURES 7, s and 9are cross-sectionalviews of conventional columns nowavailable. v

The embodiment of'my'invention shown in FIGURES l-3 includes an"H -beam10 having a pair of parallel flanges 12 and 14 interconnected by a web16. Thisbeam is of conventional design and may be fabricated 60 v t M 44formed in the side plates 18 and 28. These members '38 and 40 arenormally secured to the web during the cally this fact, wherein 8 inchand 12 inch two angle col- 3,@5,l6l rare-area Au 21, 1 962 in thecustomary manner, A side plate 18 is welded at 20 and 22 across the beamto the adjacent ends 24 and 26 of the flanges 12 and 14. A similar sideplate 28 is welded at 311 and 32 to the other ends of the flanges '12and 14. In FIGURE 1, the reader will note that the plates 18 and 28along with the flanges 12 and 14 define the vertical walls of a squarecolumn and the web of the H-beam separates the enclosed space intoclosed chambers 34 and 36. Each of the chambers is filled with astructural grade of concrete.

Tests have demonstrated that a columnconstructed in accordance with myinvention shown in FIGURE 1 has a much greater carrying capacity thanthe conventional columns shown in FIGURES 79, namely, two-angle concretefilled square columns, concrete filled pipe columns,

and H-section columns, respectively. The American Institute of SteelConstruction and the'American Concrete Institute substantiate the claimthat my column has a substantially greater capacity than theconventional columns illustrated. The following tables illustrategraphiumns, concrete filled pipe columns and] l i-columns of the typeillustrated are compared with applicants column shown in FIGURE 1. 1 Y

EIGHT INCH COLUMN Column, Fig. 1 001-, 001 Col; umn, Height, feet um,um, Fig. 9,

- x-x y-y Fig. 7 Fig. 8 y y Axis Axis. Axis Kips Kips Kips Kips Not onlyis it clear from an inspection of the tables that my column has a muchgreater carrying capacity than conventional columns of equivalent sizenow available, but further it is clear that to support a given load, acolumn constructed in accordance with with my invention may have a muchsmaller cross-section than conventional columns. For example, it will benoted that an ,j eight inch-ten feet high column constructed inaccordance with my invention has the same carrying capacity as a twelveinch-ten feet high column of the type shown in FIGURE 7. V

' "It; FIGURES 2 and ,3 Ihave shown the mama. in

which an eccentric load may be carried by the column.

In those figures, a pair of load carrying members 38 and 40 are weldedto the web 16 and extend through openings fabrication of the column.After welding the members 'to the 'web, the side plates 18 and 28 areplaced against the edges of the flanges of theibeam byinserting meenbers through the preformed slots. Thereafter, the'various joints are'welded and additional welding is usedto secure the side plates to themembers.

(a 1 to allow the eccentric loads (not shown) which are later tobeconnected to the members 3 8 and 40 to be aligned with that axis. Thus,the loads Would be secured to the members 38 and 4th on their left sideas viewed in FIG- URE 2. W

. The reader will immediately recognize that the members 38 and 40 allowthese eccentric loads to be transferred to the center of the column. Thebottom of the slots 44 through which the members 38 and 40 extend serveas fulcrurns for the members, and the eccentric loads are transferred asan upwardly directed force on the concrete and the web of the H-beam.

In the embodiment of my invention shownin FIG- URES 4 6, the concretefilling the chambers 84 and 36 is replaced by additional plates 50 whichare secured to the center of each face of the web 52 of the H-beam 54and the centers of the side plates 56 and '58. The additional plates 50preferably extend throughoutthe height of the column. Thus, as shown inFIGURE 4, the square column consists of an Hbeam 54 having a web .and

flanges 60, plates 50 which are secured to the center of each face ofthe web 52 and, are disposed parallelto the 'flanges60, and side plates56 and 58 which are secured to the ends of the flanges 66 and the plates50. The

' additionalplates 50 may be welded to the Web SZ by The 7 side plates56 and 58 are welded to the ends of theflanges continuous beads at thejoints as suggested at 62.

60 as suggested at 64. To weld the side plates 56 and 58 to the outerends of the additional plates 50, slots 66.

are formed intermittently along the centre line of the I 'plates 56 and'58 adjacent the location Where each abuts against the plate 50. PlugWelds may be employed to fill the'slots66 to secure the plates together.

A number of advantages are derived from a square column constructed inthe manner shown in FIGURE Particularly they are well suited to supporteccentric loads. In FIGURES and 6 I have. illustratedthe mannet in whicheccentric loads maybe secured to the columns to best advantage. It willbeznofted iii those figures that elongated slots 70 are cut in the sideplates 56 and 58 immediately adjacent the edges of the plates SQLand areadapted to receive load bearing connectingmembers 72.;

1 cr-um for the member '72 and'the load is transferred by tained' withina given perimeter by the use of the types of columns disclosed herein.

Having described in detail several embodiments of my invention, numerousmodifications will suggest themselves to those skilled in the art.Therefore, I do not intend to limit the breadth of my invention to thoseembodiments illustrated and described. Rather, it is my intention thatthe breadth of my invention b determined by the appended claims andtheir equivalents. What I claim as new and desire to secure by LettersPatent of the United States is:

l. A vertical column comprising a beam having a pair offlanges'integrally formed with and interconnected by a Web, said flangesand web being disposed in a vertical plane, a pair of verticallyoriented plates each parallel to the web and substantially the samewidth and height as the web, said plates being welded along their edgesto the sides of the flanges, means-interconnecting the web and theplates, said means being distinct irom the flanges and beingsubstantially equal in length rto-the plates, and eccentric load bearingmembers extending through the plates and secured to the means, said loadbearing members being displaced from the vertical center lines or" .theplates.

2. A vertical column comprising a beam having parallel flangesintegrally formed with a web,.said flanges and web being disposed invertical planes, a plate parallel .being disposed face to face with thesecond plate.

3. A vertical column comprising a beam having a pair of parallel flangesintegrally formed with a web, plates substantially the same width andheight as the web and having theiredges secured to the edges of theflanges, said plates and flanges forminga rectangle in horizontal 1cross-section, additional plates disposed parallel to the flangesandwelded to-the mid-portions of the web, slots formed in the firstnamed plates opposite the outer edges of the additional plates,plugwelds. filling the slots and securing the additional plates to thefirst named plates,

[and eccentricload bearing members extending through the first-namedplates and parallel to the additional plates,

,the member72 and the plate so to the-web 52 or the 1-1- beam. The loadapplied to the end of the member 72 thus is transferred to the web 52 asa force directed up- .wardly in'a vertical direction along the web. "Thetransferred'force supplements the load carrying capacity. of

the column. Unlike any of the prior 'art devices heretofore known, mysquare column shown in FIGURES 4-6 provides means for transferringeccentric loads to the center of the column. Moreover, loads transferredin this manner actually increase the load carrying capacity of thecolumn by the transferred upwardly directed force.

;In the calculations'set forth above, this force has been 7 ignored.

J Just asthe column shown in FIGURES j13, the column of the.secondembodiment of my invention has a.

much greater carrying capacity than the concrete filled pipebolumns orsquarecolumns presently available. As 7 .a res l1lt,.to support a givenload, a column of much, "smaller cross section isrequi'red.

I have" suggested-in the introduction the importance and meansconnecting the load bearing 'members face to 7 face with the additionalplates.

4. A vertical column comprising a beam having a pair of flangesintegrally formed with and interconnected. by :aweb, saidflanges andwebbeing disposed in vertical planes, a pair of vertically oriented plateseach parallel to the web and substantially the same width and height asthe web, said plates being Welded along their edges to the side edges ofthe flanges, the plates, flanges and of reducingithe cross-sectionalareas of'rnernbers of the 7 class or any invention. plna m-ajor piece ofconstruction such aas 'a large multi-story oflice building, .literallythousands {of additional cubic feet of space may be ob- Web forming twovertically elongated cavities of rec- I tangular horizontal .crosssection, and eccentric load carrying memberhaving one end secured to theweb and ex- References Cited in the tile ofthis patent: V V uNrr nSTATES PATENTS 120,418

{Cremin u Oct. 31, 1871 1,662,767. Wait Mar. 13, 1928 1,858,918 De VouMay 17, 1932 2,074,320 Bauer 23, 1937 2,195,327 Dean Mar. 26, 19402,624,429; Saxe Ian. 1953 1 Donahue May 13, 1958

